In order to start you need a Google account, and I believe you can start stepping through the necessary forms here. At some point it will be necssary to get an OAuth json file. MyRobotLab's GoogleCloud needs to know where this file is.

To create a json OAuth file - you must first sign into google and create a service account. This link has all the gory details. At some point eventually you should create a service account and generate a key for that service account.